Former President Bill Clinton (L) and former Secretary of State Hillary Clinton (C) listen to their daughter and Vice Chair of the Clinton Foundation Chelsea Clinton during the second day of the 2014 ... more

Former President Bill Clinton (L) and former Secretary of State Hillary Clinton (C) listen to their daughter and Vice Chair of the Clinton Foundation Chelsea Clinton during the second day of the 2014 Meeting of the Clinton Global Initiative at Arizona State University in Tempe, Arizona in this March 22, 2014 file photo. Clinton announced April 17, 2014 she is pregnant with the first grandchild of former President Bill Clinton and former Secretary of State Hillary Clinton. REUTERS/Samantha Sais/Files (UNITED STATES - Tags: POLITICS) less